GRIDUCT 88C3

IDENTIFICATION : GRIDUCT 88 C3 E 8018-C3

CLASSIFICATION : AWS/SFA 5.5 E8018-C3 BS 2493 1NiBH, DIN 8529 EY46551NiB

CHARACTERISTICS :

A basic coated low-hydrogen electrode producing a nominal 1.0% Ni weld metal, designed for welding C-Mn steel and low alloy steel where excellent fracture toughness at temperature down to –60oC is required. The addition of 1.0% Ni produces microstructural refinement, with improved tolerance to procedural variations compared to plan C-Mn weld metal. The deposited weld metal is of X-ray quality.

TYPICAL USES :

Welding of higher strength steel structure where post-weld heat-treatment is impracticable. Off-shore construction, pressure vessels, pipe lines, BS4360 Grade 50E, 55C, 55EF structural steel, DIN St52.3, GS-38, GS-52, etc.

DIFFUSIBLE HYDROGEN IN THE WELD METAL : Max 4.0 ml/100 g of weld metal

MICROSTURUCTURE : In the as welded condition, the microstructure is ferritic with a component of acicular ferrite for optimum toughness.

ASME IX QUALIFICATION : QW-432 F-NUMBER 4 , QW-442 A-NUMBER 10

REDRYING : 300°C / 2 hrs., max 5 cycles, 10 hrs. total.

WELD METAL ANALYSIS (RANGE) % :

C Mn Si Cr Ni V Mo S P
0.095 max 0.8-1.25 0.20-0.50 0.15 max 0.8-1.10 0.05 max 0.35 max 0.020 max 0.025 max

MECHANICAL PROPERTIES (RANGE):

Tensile Strength MPa 0.2% proof stress (Yield Stress) MPa Elongation (%) (L=4D) Charpy V-notch impact strength in joules
560-650 470-560 19-26 -40°C 50-120
-50°C 40-100

RECOMMENDED CURRENT AND PACKING DATA :

SIZE (mm) LENGTH (mm) AMPS AC/DC (+) PACKING PER BOX WEIGHT 1000 Pcs
2.50 350 65-100 160X4=640 19.0
3.20 450 80-130 110 X 4=440 42.0
4.00 450 130-180 70 X 4=280 67.0
5.00 450 160-220 45 X 4=180 104.0